Natural disaster

Have you heard of some destruction made by trees in nature? Then why are there some people who valued more the money that they got from the trees that they cut? Do they know the value of trees that play in nature? Why do flash floods occur? What about the landslides? What can these trees do with these destructions? Have people forgotten the balance in nature to live without the occurrence of these disastrous things? Many people have lost their lives because of these natural disaster. Sometimes we cannot see the value of things if we have not seen and experienced the danger caused by the acts that have made. When can people open their eyes and see the reality? When is the right time for us to value things that has an important role in our lives?